Answer:
-9/7
Step-by-step
Slope Formula:

We can plug in the numbers 7 and -2 for the y and -4 and 3 for x

10 is your answer!! hope this helps
Here is the answer. I’m not so sure if my answer is correct about which side should it be shaded and whether it’s a dotted or solid line, but I hope you will get some sort of idea .
You would see how many times 6 goes into 30. Which is 5. so you would take 2.5 multiplied by 5. which equals 11 hours